This is a compact size serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc.

This small size Bluetooth 4.0 TTL transceiver module allows your target device communicate with your iPhone/iPAD,Android 4.3 above devices. It's easy to use and completely encapsulated. it support AT commands, You can set it as slaver or master.